    <%@ page language="java" contentType="text/html; charset=UTF-8"
             pageEncoding="UTF-8" %>
        <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
        <!DOCTYPE html>
        <html lang="ch">
        <head>
        <meta charset="UTF-8">
        <title>工具下载界面</title>
        </head>
        <body>
        <c:forEach var="file" items="${files}">
            <button>${file}</button>
        </c:forEach>

        <c:forEach var="i" items="${files}">
            <a href="/download/${i}">${i}</a>
        </c:forEach>
        <div> ---------------------------- </div>
        <form action="/upload" method="post" enctype="multipart/form-data">

        <input type="file" name="file">
        <input type = "submit" value="提交"/>
        </form>
        </body>
        </html>